2023
DOI: 10.1590/1980-549720230028
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Molecular subtypes as a prognostic breast cancer factor in women users of the São Paulo public health system, Brazil

Abstract: Objective: This study aimed to analyze the prognosis of women with breast cancer by molecular subtypes, sociodemographic variables, and clinical and treatment characteristics. Methods: This hospital-based retrospective cohort study analyzed 1,654 women over 18 years of age diagnosed with invasive breast cancer from 2000 to 2018. Data were extracted from Brazil’s Oncocenter Foundation of São Paulo. The variables analyzed were age, histology, molecular subtypes, clinical staging, treatment type, and diagnosis-t… Show more

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“…Over 90% of the cases in this study were diagnosed with nonspecific-type invasive carcinoma, aligning with the findings reported in the literature. However, concerning the distribution of molecular subtypes among breast cancer patients, a higher proportion of 34 (50.0%) cases of luminal B subtype were observed, exceeding the reported range of 15-43% in the literature [20,21]. However, these values closely align with those found in recent studies conducted in Brazil, specifically in São Paulo [22], where Luminal A accounted for 29% and Luminal B for 47.5%, and in João Pessoa [23], with Luminal A at 22.5% and Luminal B at 57%.…”
Section: Discussionmentioning
confidence: 67%
“…Over 90% of the cases in this study were diagnosed with nonspecific-type invasive carcinoma, aligning with the findings reported in the literature. However, concerning the distribution of molecular subtypes among breast cancer patients, a higher proportion of 34 (50.0%) cases of luminal B subtype were observed, exceeding the reported range of 15-43% in the literature [20,21]. However, these values closely align with those found in recent studies conducted in Brazil, specifically in São Paulo [22], where Luminal A accounted for 29% and Luminal B for 47.5%, and in João Pessoa [23], with Luminal A at 22.5% and Luminal B at 57%.…”
Section: Discussionmentioning
confidence: 67%